Though the price haven't shown much Signs of an increase, still it's over the $250 tag. So the price will start to increase and reach $500 by the year end which is the prediction of most of the ethereum users.
the fact that price of something is still over something doesn't mean it will rise. it may rise is different though. with the things that are going on with ethereum the chances of that "may" are very small.
and with all these ICO funds that are ridiculously big numbers and when they start liquidating these funds the chances of a crash become even bigger.
and since this is all speculation, you are working with this chances, and chances of a big crash is higher than chances of any kind of big rise.
and here is your "no sign of increase"